Ruby 1.8

I maintain a SQL-Injection DSL written in Ruby. Recently RDoc began to crash when I would run the usual API documentation generation rake task. The source-code for this DSL, which causes RDoc to crash in the middle of generating HTML documentation, is located here: http://github.com/postmodern/ronin-sql/tree/master.

  $ git clone git://github.com/postmodern/ronin-sql.git
  $ cd ronin-sql
  $ rake --trace docs
  ...
  Generating HTML...
  /usr/lib/ruby/1.8/rdoc/markup/simple_markup/fragments.rb:291: warning: Object#type is deprecated; use Object#class
  rake aborted!
  undefined method `level' for nil:NilClass
  /usr/lib/ruby/1.8/rdoc/markup/simple_markup/fragments.rb:292:in `add_list_breaks'
  /usr/lib/ruby/1.8/rdoc/markup/simple_markup/fragments.rb:282:in `each'
  /usr/lib/ruby/1.8/rdoc/markup/simple_markup/fragments.rb:282:in `add_list_breaks'
  /usr/lib/ruby/1.8/rdoc/markup/simple_markup/fragments.rb:153:in `normalize'
  /usr/lib/ruby/1.8/rdoc/markup/simple_markup.rb:459:in `group_lines'
  /usr/lib/ruby/1.8/rdoc/markup/simple_markup.rb:255:in `convert'
  /usr/lib/ruby/1.8/rdoc/generators/html_generator.rb:246:in `markup'
  /usr/lib/ruby/1.8/rdoc/generators/html_generator.rb:818:in `value_hash'
  /usr/lib/ruby/1.8/rdoc/generators/html_generator.rb:865:in `write_on'
  /usr/lib/ruby/1.8/rdoc/generators/html_generator.rb:1293:in `gen_into'
  /usr/lib/ruby/1.8/rdoc/generators/html_generator.rb:1293:in `open'
  /usr/lib/ruby/1.8/rdoc/generators/html_generator.rb:1293:in `gen_into'
  /usr/lib/ruby/1.8/rdoc/generators/html_generator.rb:1289:in `each'
  /usr/lib/ruby/1.8/rdoc/generators/html_generator.rb:1289:in `gen_into'
  /usr/lib/ruby/1.8/rdoc/generators/html_generator.rb:1276:in `generate_html'
  /usr/lib/ruby/1.8/rdoc/generators/html_generator.rb:1197:in `generate'
  /usr/lib/ruby/1.8/rdoc/rdoc.rb:284:in `document'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake/rdoctask.rb:113:in `define'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:617:in `call'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:617:in `execute'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:612:in `each'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:612:in `execute'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:578:in `invoke_with_call_chain'
  /usr/lib/ruby/1.8/monitor.rb:242:in `synchronize'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:571:in `invoke_with_call_chain'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:588:in `invoke_prerequisites'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:585:in `each'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:585:in `invoke_prerequisites'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:577:in `invoke_with_call_chain'
  /usr/lib/ruby/1.8/monitor.rb:242:in `synchronize'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:571:in `invoke_with_call_chain'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:564:in `invoke'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:2019:in `invoke_task'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1997:in `top_level'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1997:in `each'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1997:in `top_level'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:2036:in `standard_exception_handling'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1991:in `top_level'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1970:in `run'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:2036:in `standard_exception_handling'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/lib/rake.rb:1967:in `run'
  /usr/lib/ruby/gems/1.8/gems/rake-0.8.3/bin/rake:31
  /usr/bin/rake:19:in `load'
  /usr/bin/rake:19